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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-05-15 11:17:41 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-05-15 11:17:41 -0700 |
commit | 0336104dcba613586cd22279db445840d4ebcdeb (patch) | |
tree | 94df76934cc043810211f9de59d9d62ac20ec491 | |
parent | f0897f4cc0fcdd2410ba0ff0bc1bc64e6e72672a (diff) | |
parent | b0dc2b9bb4ab782115b964310518ee0b17784277 (diff) | |
download | lwn-0336104dcba613586cd22279db445840d4ebcdeb.tar.gz lwn-0336104dcba613586cd22279db445840d4ebcdeb.zip |
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"8 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm, numa: really disable NUMA balancing by default on single node machines
MAINTAINERS: update Jingoo Han's email address
CMA: page_isolation: check buddy before accessing it
uidgid: make uid_valid and gid_valid work with !CONFIG_MULTIUSER
kernfs: do not account ino_ida allocations to memcg
gfp: add __GFP_NOACCOUNT
tools/vm: fix page-flags build
drivers/rtc/rtc-armada38x.c: remove unused local `flags'
-rw-r--r-- | MAINTAINERS | 10 | ||||
-rw-r--r-- | drivers/rtc/rtc-armada38x.c | 2 | ||||
-rw-r--r-- | fs/kernfs/dir.c | 9 | ||||
-rw-r--r-- | include/linux/gfp.h | 2 | ||||
-rw-r--r-- | include/linux/memcontrol.h | 4 | ||||
-rw-r--r-- | include/linux/uidgid.h | 4 | ||||
-rw-r--r-- | mm/kmemleak.c | 3 | ||||
-rw-r--r-- | mm/mempolicy.c | 2 | ||||
-rw-r--r-- | mm/page_isolation.c | 3 | ||||
-rw-r--r-- | tools/vm/Makefile | 2 |
10 files changed, 28 insertions, 13 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 5d87ccbee19b..64b49f549211 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1935,7 +1935,7 @@ S: Maintained F: drivers/net/wireless/b43legacy/ BACKLIGHT CLASS/SUBSYSTEM -M: Jingoo Han <jg1.han@samsung.com> +M: Jingoo Han <jingoohan1@gmail.com> M: Lee Jones <lee.jones@linaro.org> S: Maintained F: drivers/video/backlight/ @@ -3918,7 +3918,7 @@ F: drivers/extcon/ F: Documentation/extcon/ EXYNOS DP DRIVER -M: Jingoo Han <jg1.han@samsung.com> +M: Jingoo Han <jingoohan1@gmail.com> L: dri-devel@lists.freedesktop.org S: Maintained F: drivers/gpu/drm/exynos/exynos_dp* @@ -7557,7 +7557,7 @@ S: Maintained F: drivers/pci/host/*rcar* PCI DRIVER FOR SAMSUNG EXYNOS -M: Jingoo Han <jg1.han@samsung.com> +M: Jingoo Han <jingoohan1@gmail.com> L: linux-pci@vger.kernel.org L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) L: linux-samsung-soc@vger.kernel.org (moderated for non-subscribers) @@ -7565,7 +7565,7 @@ S: Maintained F: drivers/pci/host/pci-exynos.c PCI DRIVER FOR SYNOPSIS DESIGNWARE -M: Jingoo Han <jg1.han@samsung.com> +M: Jingoo Han <jingoohan1@gmail.com> L: linux-pci@vger.kernel.org S: Maintained F: drivers/pci/host/*designware* @@ -8521,7 +8521,7 @@ S: Supported F: sound/soc/samsung/ SAMSUNG FRAMEBUFFER DRIVER -M: Jingoo Han <jg1.han@samsung.com> +M: Jingoo Han <jingoohan1@gmail.com> L: linux-fbdev@vger.kernel.org S: Maintained F: drivers/video/fbdev/s3c-fb.c diff --git a/drivers/rtc/rtc-armada38x.c b/drivers/rtc/rtc-armada38x.c index cb70ced7e0db..4b62d1a875e4 100644 --- a/drivers/rtc/rtc-armada38x.c +++ b/drivers/rtc/rtc-armada38x.c @@ -64,7 +64,7 @@ static void rtc_delayed_write(u32 val, struct armada38x_rtc *rtc, int offset) static int armada38x_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct armada38x_rtc *rtc = dev_get_drvdata(dev); - unsigned long time, time_check, flags; + unsigned long time, time_check; mutex_lock(&rtc->mutex_time); time = readl(rtc->regs + RTC_TIME); diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index f131fc23ffc4..fffca9517321 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -518,7 +518,14 @@ static struct kernfs_node *__kernfs_new_node(struct kernfs_root *root, if (!kn) goto err_out1; - ret = ida_simple_get(&root->ino_ida, 1, 0, GFP_KERNEL); + /* + * If the ino of the sysfs entry created for a kmem cache gets + * allocated from an ida layer, which is accounted to the memcg that + * owns the cache, the memcg will get pinned forever. So do not account + * ino ida allocations. + */ + ret = ida_simple_get(&root->ino_ida, 1, 0, + GFP_KERNEL | __GFP_NOACCOUNT); if (ret < 0) goto err_out2; kn->ino = ret; diff --git a/include/linux/gfp.h b/include/linux/gfp.h index 97a9373e61e8..15928f0647e4 100644 --- a/include/linux/gfp.h +++ b/include/linux/gfp.h @@ -30,6 +30,7 @@ struct vm_area_struct; #define ___GFP_HARDWALL 0x20000u #define ___GFP_THISNODE 0x40000u #define ___GFP_RECLAIMABLE 0x80000u +#define ___GFP_NOACCOUNT 0x100000u #define ___GFP_NOTRACK 0x200000u #define ___GFP_NO_KSWAPD 0x400000u #define ___GFP_OTHER_NODE 0x800000u @@ -87,6 +88,7 @@ struct vm_area_struct; #define __GFP_HARDWALL ((__force gfp_t)___GFP_HARDWALL) /* Enforce hardwall cpuset memory allocs */ #define __GFP_THISNODE ((__force gfp_t)___GFP_THISNODE)/* No fallback, no policies */ #define __GFP_RECLAIMABLE ((__force gfp_t)___GFP_RECLAIMABLE) /* Page is reclaimable */ +#define __GFP_NOACCOUNT ((__force gfp_t)___GFP_NOACCOUNT) /* Don't account to kmemcg */ #define __GFP_NOTRACK ((__force gfp_t)___GFP_NOTRACK) /* Don't track with kmemcheck */ #define __GFP_NO_KSWAPD ((__force gfp_t)___GFP_NO_KSWAPD) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 72dff5fb0d0c..6c8918114804 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -463,6 +463,8 @@ memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) if (!memcg_kmem_enabled()) return true; + if (gfp & __GFP_NOACCOUNT) + return true; /* * __GFP_NOFAIL allocations will move on even if charging is not * possible. Therefore we don't even try, and have this allocation @@ -522,6 +524,8 @@ memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) { if (!memcg_kmem_enabled()) return cachep; + if (gfp & __GFP_NOACCOUNT) + return cachep; if (gfp & __GFP_NOFAIL) return cachep; if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD)) diff --git a/include/linux/uidgid.h b/include/linux/uidgid.h index 0ee05da38899..03835522dfcb 100644 --- a/include/linux/uidgid.h +++ b/include/linux/uidgid.h @@ -109,12 +109,12 @@ static inline bool gid_lte(kgid_t left, kgid_t right) static inline bool uid_valid(kuid_t uid) { - return !uid_eq(uid, INVALID_UID); + return __kuid_val(uid) != (uid_t) -1; } static inline bool gid_valid(kgid_t gid) { - return !gid_eq(gid, INVALID_GID); + return __kgid_val(gid) != (gid_t) -1; } #ifdef CONFIG_USER_NS diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 5405aff5a590..f0fe4f2c1fa7 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -115,7 +115,8 @@ #define BYTES_PER_POINTER sizeof(void *) /* GFP bitmask for kmemleak internal allocations */ -#define gfp_kmemleak_mask(gfp) (((gfp) & (GFP_KERNEL | GFP_ATOMIC)) | \ +#define gfp_kmemleak_mask(gfp) (((gfp) & (GFP_KERNEL | GFP_ATOMIC | \ + __GFP_NOACCOUNT)) | \ __GFP_NORETRY | __GFP_NOMEMALLOC | \ __GFP_NOWARN) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index ede26291d4aa..747743237d9f 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2518,7 +2518,7 @@ static void __init check_numabalancing_enable(void) if (numabalancing_override) set_numabalancing_state(numabalancing_override == 1); - if (nr_node_ids > 1 && !numabalancing_override) { + if (num_online_nodes() > 1 && !numabalancing_override) { pr_info("%s automatic NUMA balancing. " "Configure with numa_balancing= or the " "kernel.numa_balancing sysctl", diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 755a42c76eb4..303c908790ef 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -101,7 +101,8 @@ void unset_migratetype_isolate(struct page *page, unsigned migratetype) buddy_idx = __find_buddy_index(page_idx, order); buddy = page + (buddy_idx - page_idx); - if (!is_migrate_isolate_page(buddy)) { + if (pfn_valid_within(page_to_pfn(buddy)) && + !is_migrate_isolate_page(buddy)) { __isolate_free_page(page, order); kernel_map_pages(page, (1 << order), 1); set_page_refcounted(page); diff --git a/tools/vm/Makefile b/tools/vm/Makefile index ac884b65a072..93aadaf7ff63 100644 --- a/tools/vm/Makefile +++ b/tools/vm/Makefile @@ -3,7 +3,7 @@ TARGETS=page-types slabinfo page_owner_sort LIB_DIR = ../lib/api -LIBS = $(LIB_DIR)/libapikfs.a +LIBS = $(LIB_DIR)/libapi.a CC = $(CROSS_COMPILE)gcc CFLAGS = -Wall -Wextra -I../lib/ |